want to bring in dan simon, following this from san francisco. tell us all about this. >> reporter: well, hi, suzanne. zuckerberg calling this one of the most exciting features facebook has come out with in a long time. now, no broadcast cameras were alo allowed for this event yesterday. facebook knows so much information about us. you got a billion users on facebook, they know our likes from hotels, cars, restaurants, all these photos. there is no really easy way to search for this information. well, that changes with this new product called graph search and facebook put together this video demonstration in terms of how it works. take a look. ♪ >> reporter: so these are some things you could potentially search for, people from my hometown who like hiking, people who like tennis and live nearby, music my friends like, photos of my friends taken in new york. so you can see, you can basically search for anything that your friends have posted on facebook. now this product, suzanne, is in beta. it is going to be rolled out gradually. you can see ho